XINHUA At least four police officers and 10 suspected gunmen of the Cartel of the Northeast were killed in an hour-long gun battle in Mexico’s northern state of Coahuila, authorities said Saturday, Nov. 30. Coahuila Governor Miguel Ángel Riquelme Solís, governor of Coahuila state, said six more policemen were injured in the battle and several municipal workers were missing. The governor